No ka maʻalahi o ke kau ʻana, ʻO nā pā pahū-hōʻoia ua lako ʻia me nā pahu kuʻekuʻe o loko a me waho. Hoʻopili ʻia kēia mau ʻāpana no ka crimping me nā uea kumu keleawe 4.0mm2, hoʻokomo i nā hiʻohiʻona e pale ai i ka wehe ʻana a me ka ʻino.
I nā hiʻohiʻona e hoʻohana ana i nā uwila metala a me nā pahu hoʻolaha pahū-hōʻike pālua ʻelua., the use of grounding connectors becomes unnecessary.