Solar Inspection Checklist- LMLM

Has an OH&S JSA been completed?

Are there defects on certificate

Is the solar PV system capable of producing electricity at the installation address without the need for any additional parts to be incorporated?

Has the inverter been installed in a location that has safe access and adequate working space?

Is the site-specific shutdown procedure correct and permanently fixed at the inverter?

Are the inverter(s) of appropriate IP rating for their location?

If the inverter is located further than 3 metres from the switchboard or not in direct line of sight is there a suitably rated lockable AC isolator at the inverter

Is the inverter installed in an appropriate area?

Are the AC cables supplying the inverter secure and mechanically protected if required

If there is flexible cable supplying the inverter, does it have strain relief?

Are there any signs of loose connections in the LV cables?

Are the DC cables connecting to the inverter mechanically secured in such a manner that they cannot be inadvertently unplugged from the inverter? no more than 300mm unsupported cable

Are multi-holed glands installed if required?

Do all cable entries maintain the manufacture's IP rating?

Does the clearance around the inverter meet the manufacturer’s minimum requirements?

Is the inverter securely and safely installed with all fixing/locking screws present?

is a fire barrier installed behind inverter if required

Are there any visible loose connections in LV cables?

Has segregation been provided between any AC and DC components connected in the same enclosure? (i.e. there must be physical separation between AC and DC in an enclosure where wiring from both components are terminated)

Is the DC isolator (or DC C/B) lockable in the off position?

Is the DC isolator inbuilt?

Does the DC enclosure(s) at the inverter have the required IP rating (minimum IP56NWif outdoors) and has been installed to maintain that rating?

Is there evidence of Water Ingress?

Are there signs of water damage observed?

Is the load breaking DC isolator(s) located adjacent to the inverter correctly rated for the required DC voltage and current?

disconnection point labelled at array

disconnection point within 150mm from edge of array

are drain devices fitted if required?

Are the modules in the same string installed in the same orientation +/-5 degrees?

Are all DC connectors of the same type/model from the same manufacturer? (Connectors are to be matched and mated pairs at connection points)

If the number of PV array strings, which could result in a potential fault current in any one string greater than the reverse current of an individual module, is appropriate string protection provided? (e.g. protected with fuses or non-polarised circuit breakers)

If string protection is installed, are all components rated for DC application and the required voltage and current?

If string protection is installed, do the fuse holders have a current rating equal to or greater than the corresponding fuse?

Does the designed array fit on the available roof area? (e.g. solar panels are not positioned over roof edges or gutters)

is a fire barrier installed around DC isolation if required

Is the array’s maximum voltage VoC array max (at minimum temperature) less than 600vDC?

Are the AC wiring losses less than 2% between the inverter terminals and the point of supply?

Is the roof safe to access?

Are there any signs of broken tiles or damage to tin?

Are there any signs of loose connections in the LV cables?

Is the array wiring and wiring to the inverter protected from UV? (This requires a visual inspection of all cables related to the system and may require checking on the roof)

Is a load breaking DC isolator located adjacent to the array?

Has double insulation been maintained between all live conductor(s) and all earthed or exposed conductive part(s)?

Is the load breaking DC isolator located adjacent to the array(s) correctly rated for the required DC voltage and current?

Does the DC enclosure(s) at the array have the required IP rating (minimum IP56NWif outdoors) and has been installed to maintain that rating?

Is there evidence of water ingress in roof top DC isolator/s?

Are there signs of water damage observed?

Roof - Are the roof penetrations and/or the roof top components used in the wiring system, including secondary shields, isolator shrouds, collared flashings, multi-holed glands, conduits and conduit glands, suitably installed, sealed and waterproof?

Roof - Are all cables/wiring in the installation securely fixed in place to minimize any movement of the cable?

Roof - Are any conduits installed protected from UV or UV rated?

Roof - Do any PV cable junction boxes have a minimum IP 55 rating (IP 55 if mounted on the array), and have been correctly installed to maintain that rating?

Roof - Is there evidence of water ingress to all PV Cable junction boxes?

Roof - Are there signs of water damage observed in PV cable junction boxes?

Roof - Has the double insulation been maintained between the positive and negative conductors/terminations within all enclosures?

Roof - Is there evidence of mechanical damage to LV cables?

Roof - Do all LV string cables comply with the requirements of:(a) PV1-F, (b) UL 4703, or (c) VDE-AR-E 2283-4?

Roof - Do the PV array mounting frames and modules have an equipotential bond connected to the earthing terminal on the switchboard/distribution board to which the inverter is connected, either directly or via the inverter main earth conductor?

are catenary wires earthed if pv string cables are attached?

Wiring - Is the array wiring and wiring to the inverter protected from mechanical damage?

Wiring - Are all DC cable(s) installed within the ceiling space, wall cavity or floor enclosed in heavy duty conduit or equivalent?

Wiring - Is the PV array cabling distinctively marked 'PV' in permanent, legible and indelible English

Label - Are all PV cable junction boxes labelled 'WARNING: HAZARDOUS DC VOLTAGE'?

Wiring - Are all cables/wiring in the installation securely fixed in place to minimize any movement of the cable?

are minimum clearances in roof maintained for DP installed wiring?

If installed outdoors, do all cable/conduit enter the lower face of the enclosure?

Label - Is signage, consisting of circular, green reflector correct DP or SW

Label - Is there a site map at the main switchboard ? and is it laminated or of durable construction

Label - If the solar system is connected to a distribution board, is the following label present: “Warning Multiple Supplies Isolate Inverter Supply at Distribution Switchboard at ......”?

Label - Is the grid supply main switch labelled “Main Switch Grid Supply”?

Label - Does the switchboard contain the label "Multiple Supplies Isolate all Supplies before Working on this Switchboard”?

Label - Is there an AC circuit breaker in or adjacent to the switchboard for the system labelled “Main Switch Inverter Supply”?

Switchboard - Is the AC circuit breaker rated to the output current of the inverter?

Switchboard - Is the AC circuit breaker suitably sized to protect the cable supplying the inverter?

switchboard - are cable entry holes provided with a close fit?

What is outcome of inspection?