How do I choose a commercial electrician in Chelmsford?
Check qualifications, insurance, commercial experience and BS 7671 compliance before hiring. A practical Chelmsford buyer's guide for facilities managers.
Delta First Building Services Insights
Expert Advice on Electrical, Mechanical, HVAC & Compliance
Delta First Building Services Insights
Expert Advice on Electrical, Mechanical, HVAC & Compliance
Delta First Editorial Team
The Delta First Editorial Team consists of experienced building services professionals passionate about sharing practical knowledge from across the commercial construction and facilities management sector. We publish expert articles covering electrical systems, HVAC, mechanical services, planned maintenance, compliance, energy efficiency and building fabric, helping businesses keep their properties safe, compliant and operating efficiently.
The Building Safety Act for building owners: accountable persons, the golden thread and M&E records
What the Building Safety Act 2022 means for building owners: accountable persons, the golden thread and the M&E and fire records you need to keep.
Commercial solar PV in Essex: sizing, grid connection and maintenance for business premises
How to size commercial solar PV for an Essex business, the DNO and planning checks that apply, available tax reliefs and how to keep it performing.
Commercial heat pump installation: is your building ready and what does it involve?
What a commercial heat pump installation involves: heat loss surveys, flow temperatures, electrical capacity, refrigerants, funding and maintenance.
HMO fire safety requirements: alarms, emergency lighting and fire doors for landlords
HMO fire safety explained for landlords: fire risk assessments, alarm grades, fire doors, emergency lighting, licensing and keeping compliant.
Upgrading to three-phase power for commercial premises: process, DNO applications and timescales
How a single-phase to three-phase upgrade works for business premises: when you need one, the DNO application, timescales, costs and on-site work.
Lightning protection testing under BS EN 62305: inspection intervals and what engineers check
How often lightning protection must be inspected under BS EN 62305, what engineers check, who is responsible and which records to keep.
Dry riser testing and maintenance: inspection intervals and responsible person duties
Dry risers need six-monthly visual inspections and an annual pressure test under BS 9990. What each visit covers and who is responsible.
AOV and smoke ventilation maintenance: testing frequencies and duties for building owners
How often AOVs and smoke vents should be tested, who holds the legal duty, and what records building owners need to keep.
BS 5839 fire alarm categories explained: L1 to L5, M and P systems
BS 5839 fire alarm categories in plain English: M, L1 to L5, P1 and P2, domestic grades, who chooses the category and how often to test.