aardvarkash10 955 Posted December 9, 2021 Share Posted December 9, 2021 I want to have an isolator switch on the main switchboard in the cabin. The switch gear is 15A rated, but there is a LOT being powered from the live feed to the switchboard. The old auto-sparkie in me says use a relay, but is it necessary or am I over-complicating? Quote Link to post Share on other sites
mcp 32 Posted December 9, 2021 Share Posted December 9, 2021 You are not switching unload, so it will be fine. 1 Quote Link to post Share on other sites
Island Time 1,234 Posted December 9, 2021 Share Posted December 9, 2021 Agree with MCP - but for clarification the supply lead to the switchboard should be a decent battery cable size - and be fused at the battery. If it is, no issue, and not really related to the AP switch, provided that cable has the capacity to carry the extra load. The load of a TP32 is not huge, average about 0.5a, max about 7a...no issues for the 15a switch/breaker. 1 Quote Link to post Share on other sites
mcp 32 Posted December 9, 2021 Share Posted December 9, 2021 Unload...should have read...A load. Autocorret moment. Quote Link to post Share on other sites
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