You may only connect appliances that are fitted with a plug. iSocket has a 16A relay. This means that you may connect about 3500W load for countries with ~230VAC (European countries and most other countries) or about 2000W load for countries with ~120VAC (e.g. North America). This applies for continuous resistive load. If your country has limitations (e.g. 13A in the UK) please follow the regulations in your country. You can check Tech Spec tabs for each iSocket on the iSocket World catalog. If your need to connect heavy loads you may consider to use contactors.