Megger offers advice for UK electricians selecting multifunction testers suited for combined AC installation and solar PV testing.
As solar photovoltaic (PV) installations become increasingly common across UK residential and commercial properties, electricians are facing decisions about upgrading their core testing equipment. Technical experts from Megger have addressed queries regarding the specification required for multifunction testers (MFTs) when work extends into solar PV systems alongside standard AC installations.
Standard electrical installation testing covers AC circuits, ensuring compliance with BS 7671. However, testing DC solar arrays requires specific capabilities, including open-circuit voltage checks, short-circuit current measurements, and insulation resistance testing on DC systems. Combined multifunction testers allow sparks to carry a single instrument rather than buying separate DC solar testing kits, streamlining standard site routine and reducing overall kit bag weight.
What does this mean for a UK tradesperson or DIYer actually buying this kit — does it change what they should pay, buy, or watch out for?
For sparks expanding into renewables, investing in an MFT that natively includes solar PV functionality prevents the need to buy dedicated secondary meters, which can cost anywhere from £300 to over £1,000 extra. Buyers looking at brands like Megger, Fluke, or Kewtech across major trade outlets like Screwfix and Toolstation should carefully verify that prospective models cover both Category III/IV AC safety ratings and the specific DC voltage ranges necessary for PV arrays before upgrading. Buying a PV-ready unit from the outset secures compliance without over-complicating everyday AC testing work.
Reported by Professional Electrician — original article
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