Guides
Application guides for installers, specifiers and distributors
Plain-language answers to the questions we hear from the field — code requirements, sizing, product selection — written by the people who make the products in Elizabeth, New Jersey.
In-use cover vs. weatherproof cover: what NEC 406.9 actually requiresWhen an outdoor receptacle needs an extra-duty while-in-use cover, when a flat weatherproof cover is enough, and how to pick the right one.LFNC-A, LFNC-B and LFNC-C: which liquid-tight non-metallic conduit to useThe three constructions of liquid-tight flexible non-metallic conduit under NEC Article 356, where each is permitted, and how to specify and terminate LFNC-B.Liquid-tight conduit fill chart: how many THHN conductors fit in LFNC-BConduit fill for 3/8″ to 2″ liquid-tight flexible non-metallic conduit (LFNC-B) with THHN/THWN conductors, worked from NEC Chapter 9 Tables 1, 4 and 5.How to choose a weatherproof outlet box: gangs, hubs, metal vs. plasticA practical guide to specifying weatherproof (FS-style) outlet boxes for outdoor receptacles, switches and lights: gang count, hub size and count, material, covers and gaskets.ENT (smurf tube): where it is permitted, where it is not, and how to install itElectrical nonmetallic tubing under NEC Article 362: permitted and prohibited uses, concrete encasement, support spacing, fittings and the height limits some occupancies impose.Pool filter hose and vacuum hose: sizes, lengths and how to connect themHow to pick 1-1/4″ or 1-1/2″ pool hose, how many connection hoses an above-ground pool needs, vacuum hose length, clamps, and what IAPMO listing means.Suction hose vs. discharge hose: choosing PVC hose for pumpsWhy suction hose needs a rigid helix, how to size hose for a pump, vacuum and working-pressure ratings, temperature, fittings and the Rollerflex series for each duty.Marine sanitation hose: stopping holding-tank odour and choosing replacement hoseWhy marine toilet and holding-tank hose permeates, how to test it, what to replace it with, sizes, routing and the difference between sanitation, bilge and livewell hose.
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